Xiaomi Redmi K40 vs Samsung Galaxy S21 Ultra

Phone Name	Xiaomi Redmi K40 Samsung Galaxy S21 Ultra
Phone image
Price
Our Rating	8.0 9.0
Brand	Xiaomi Samsung
Category	Mobiles Mobiles

Network


Network Technologies	GSM / CDMA / HSPA / CDMA2000 / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE / 5G
Network Technology 3G	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Network Technology 4G	1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
Network Technology 5G	1, 3, 28, 41, 77, 78 SA/NSA SA/NSA/Sub6/mmWave
Speed	HSPA 42.2/5.76 Mbps, LTE-A, 5G HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G

Launch Date


Announced	25 ,February, 2021 14, January, 2021
Market Availability	4, March, 2021 29, January, 2021

Design


Dimensions Mobile	163.7 x 76.4 x 7.8 Mm (6.44 × 3.01 x 0.31 inch) 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 inch)
Weight	196 G (6.91 oz) 227 gram / 229 gram
SIM	Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
Materials	- Front glass (Corning Gorilla Victus), back (Corning Gorilla glass), aluminum frame
Colors	Black, White, Aurora Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown
Other features	- Samsung Pay (Visa, MasterCard Certificate) - IP68 water and dust resistant, for a depth of up to 1.5 meters 30 Minute - support S-Pen

DISPLAY


Type	Super AMOLED Dynamic AMOLED 2X
size	6.67 Inch (~ 85.9% screen-to-body ratio) 6.8 Inch (~ 89.8% screen-to-body ratio)
Screen Resolution	1080 x 2400 Pixels, ratio 20:9, 395 Pixels per inch 1440 x 3200 Pixels, ratio 20: 9 (~ 515 Pixels per inch)
Screen protection	Corning Gorilla Glass 5 Corning Gorilla Victus Glass
Other features	- 1300 nits typ - Refresh rate 120 Hz - HDR10 + - Refresh rate 120 Hz - HDR10+ - Always-on display or the display always works - 1500 nits

Performance


Operating System	Android 11 user interface MIUI 12 Android 11 One UI 3.1
Chipset	Qualcomm SM8250-AC Snapdragon 870 5G - (7 nm) Qualcomm Snapdragon 888 - (5nm) / Exynos 2100 Global - (5nm) (depending on the country)
CPU Speed	Octa core (1x3.2GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) - Octa-core for the Middle East (1 x 2.9 GHz Cortex-X1 & 3 x 2.8 GHz Cortex-A78 & 4 x 2.2 GHz Cortex-A55) - Octa core model for the United States / China / Korea (1x2.84GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1. 80 Kryo GHz 680)
Gpu graphics processor	Adriano 650 Mali-G78 MP14 - International / Adreno 660 - United States / China / Korea

Storage


External memory	no no
RAM	6/8/12 GB 12/16 GB
Storage	128/256 GB, UFS 3.1 128/256/512 GB, UFS 3.1

Cameras


Rear camera	Triple camera: - 48 Megapixel, 26mm (wide), PDAF, f/1.8 aperture - 8 Megapixel, (ultra-wide), f/2.2 - 5 Mega pixels, 50mm (macro) Quad camera: - 108 Megapixels, (2nd generation), 26mm (wide), PDAF, laser AF, OIS, lens f/1.8 - 10 Mega-pixel, 240mm (periscope telephoto), dual pixel PDAF, OIS, 10x optical zoom, f/4.9 aperture - 10 Mega-pixel, 70mm (telephoto), dual pixel PDAF, OIS, 3x optical zoom, f/2.4 - 12 Mega pixel, 13mm (ultra wide), dual pixel PDAF, Super Steady video, f/2.2
Camera Features	LED flash, HDR, panorama LED flash, auto HDR, panorama
Video	- 4K video recording @ 30 Fps - 1080 Pixel 30/60/120/240/960 fps - Electronic stabilizer gyro-EIS - 8K video recording, 24 Fps - 4K video recording @ 30/60 Fps - 1080 Pixel 30/60/240 fps - 720 Pixel 960 fps - Electronic stabilizer gyro-EIS - Stereo sound recording - HDR10+
Selfie camera	20 Megapixels (widescreen) 40 Megapixel, 26mm (wide), PDAF, f/2.2 aperture
Features	HDR Dual video call, Auto-HDR
	1080 Pixel 30 Fps, 720 Pixel 120 fps 1080 Pixel 30 fps, 4K video recording, 30/60 Fps

Battery


Battery	4520 mAh, Li-polymer, non-removable Lithium polymer, 5000 MAH, non-removable
Fast battery charging	- Fast charging 33W - Fast charging 25W
Other battery features	- Up to 100% in 52 Minute - Power Delivery 3.0 - Quick Charge 3+ - Wireless charging 15W - reverse wireless charging 4.5W - USB Power Delivery 3.0 - Fast Qi wireless charging / LDCs

Sound


Loudspeaker	Yes, with stereo speakers Yes
3.5mm jack
Other Sound features	audio 24 Bit / 192 KHz - audio 32 Bit / 384 KHz - Tuned by AKG

Connectivity


Wi-Fi Technology	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot
Bluetooth	Yes 5.1, A2DP, LE, APTX HD 5.2, A2DP, LE
GPS	Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS, NavIC Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC	Yes Yes
Infrared	Yes no
Radio	no FM Radio (Snapdragon model only; market dependent / Operator)
Charging port	USB Type-C 2.0, USB On-The-Go USB Type-C 3.2, USB On-The-Go
Sensors	Footprint, acceleration, gyro, proximity, compass, color spectrum Fingerprint (under display, ultrasonic), acceleration, gyro, proximity, compass, barometer
Additional features	- Samsung DeX, Samsung Wireless DeX (desktop experience support) - ANT+ - Bixby natural language commands and dictation

Mobile price


Price in Egypt	5,499 Egyptian Pound 22,800 Egyptian Pound
Price in Saudi Arabia [: Ar] Price in Saudi Arabia Saudi Riyal (SAR) [:]	1,282 SR 4,496 SR
Price in the UAE [: Ar] mobile price in the United Arab Emirates in UAE Dirhams (AED) [:]	1,256 AED 4,403 AED
Mobile price in India	24,850 Indian Rupee 87,653 Indian Rupee
Mobile price in Iraq	499,150 Iraqi Dinar 1,750,185 Iraqi Dinar
Mobile price in dollars	280 Euros equivalent 340 USD 1,199 USD, 128GB 12GB RAM
Prices are on	25 ,February, 2021 14, January, 2021

cell phone


Mobile name	Xiaomi Redmi K40 Samsung Galaxy S21 Ultra 5G
MODEL	M2012K11AC, M2011K2C SM-G998B, SM-G998B/DS